Tuesday 8 April 2025

April 2025: is it safe to deploy?

What Microsoft fixed, how urgent it is, and whether anything broke, per Windows version, from Microsoft's release tables, release health, MSRC, CISA, and what the community reports.

← Mar 2025 May 2025 →

Superseded

Newer updates replace April 2025.

The CVEs it fixes are unknown; no open known issues found in the current public evidence; out-of-band fixes followed on 11 Apr, 16 Apr. See November 2026 Patch Tuesday.

MSRC's April 2025 security update document isn't collected.

ChangeIntel's reading of public signals, not advice; check Microsoft's guidance and test before you deploy. Terms

Microsoft CVEs: Unknown
Exploited fixed: Unknown
In CISA KEV: Unknown
Open known issues: 0
Out-of-band: 7

Release calendar · April 2028

Sat 1 Apr

Sun 2 Apr

Mon 3 Apr

Tue 4 Apr

Wed 5 Apr

Thu 6 Apr

Fri 7 Apr

Sat 8 Apr

Sun 9 Apr

Mon 10 Apr

Tue 11 Apr

Patch Tuesday

Wed 12 Apr

Thu 13 Apr

Fri 14 Apr

Sat 15 Apr

Sun 16 Apr

Mon 17 Apr

Tue 18 Apr

Wed 19 Apr

Thu 20 Apr

Fri 21 Apr

Sat 22 Apr

Sun 23 Apr

Mon 24 Apr

Tue 25 Apr

Wed 26 Apr

Thu 27 Apr

Fri 28 Apr

Sat 29 Apr

Sun 30 Apr

Patch Tuesday and security (B) releasesPreview (D) releasesOut-of-band releases.NET Framework servicing packagesEdge, Office, Teams, Defender and server releasesAll product versions